Smoking pipe



932. E. c. GUNNARSON 1,364,432

' SMOKING PIPE Filed Oct. 24, 1930 I IIIIlIIIIl/Il 'III '{IIII/I INVENTOR WITNESSES E1200; Guava/15012 Z .97 7,6 BY flan/ ia MTQRNEY Patented June 21, .1932

KNOCK C. GUNNABSON', OI BROOKLYN, NEW YORK SIOKING PIPE Application me October 24, 1930. Serial x5. 490,988.

said passage, when assembled will beinterfitted in an airtight manner, thereby prevent- ,ing seepage of liquid or moisture to the exterior of the stem, also preventing escape of smoke except through the mouthpiece of the pipe, and also compelling the smoke to pass entirely along the passage intended for the smoke. Another object of the invention is the provision of packing of the indicated character in a smoking pipe which may be readily renewed or replaced whenever the occasion arises.

Another object of the invention is the provision of stem sections having a spiral smoke groove having provision for collecting nicotine and other impurities.

The nature of the invention and its distinguishing features and advantages will appear when the following specification is read in connection with the accompanying drawing, in which Figure 1 is a central longitudinal section of a pipe embodying the features of the invention;

Figure 2 is a top .viewof the mouthpiece or bit and extension formed thereon.

Referring now more particularly to the drawing, it will be apparent that the pipe includes a bowl 10 for the tobacco and a stem 11 connected with the bowl. The stem 11 has a smoke passage 12 which communicates with the interior of the bowl at the bottom thereof and which also communicates with a bore 13 in the stem 11. The bore 13 is of uniform diameter throughout its length. The pipe also includes a mouthpiece or bit 14 hav= mg an extension 15. The extension in the 'knot smoke passage 18.

present instance forms an integral part of the mouthpiece or bit 14. In accordance with the invention, the extension 15 is provided with a spiral or helical groove 16 and a corresponding spiral or helical ridge or flange 17 The groove 16 extends continuously from one end of the extension 15 to the other end at which it forms a continuation of a smoke and draft passage 18 in the mouthpiece or bit 14, as at 19. The extension 15 is smaller in cross sectional size than the mouthiece or bit 14 to present a shoulder- 20. he extension is provided with holes 21 and 22, respectively, at the opposite ends thereof. The ridge or flange 17 is provided with a continuous groove 23 which leads to the holes 21 and 22. Use is made of suitable packing 24 in the form of a cord or twine which is wound spirally or helically around the extension'15 disposed in the groove 23. 7 This is accomplished by inserting one end of the packing in the hole 21 and then tying a knot to prevent the packing from pulling throu h at this end of the extension '15; the

being designated 25. The packing is then wound around the extension 15 disposed in the groove 23 and the remaining end is inserted in the hole 22 after which the packing is cut off so as to terminate at one end of the hole 22 with a ortion of the packing extending transverse y of the extension 15, as shown in Figure 1. When the mouthpiece or hit 14 is assembled with the stem 11, the extension 15 will be disposed within the bore 13 with the packing in contact with the wall pif the bore 13, thereby forming an airtight t The. shoulder 20 limits the extent of insertion of the extension 15 in the bore 13 so that the inner end of the extension 15 will be spaced from the adjacent end of the smoke passage 12. It will be apparent that when the extension 15 is inserted in the bore 13 of the stem 11 a spiral or helical smoke passage will be formed or defined within the stem 11, 95

and that this smoke passage communicates at one end with the smoke passage 12 and communicates at its opposite end with the From the foregoing it will be apparent between the extension 15 and stem 11. 1

that the provision of the packing 24 makes it possible to obtain an airtight fit between the sections of the stem; that liquid or moisture will be prevented from seeping to the interior of the stem 11 along the wall of the bore 13; and that the smoke will be comgelled to pass entirely along the spiral or elical passage formed within the stem 11. Attention is also called to the fact that the m packing 24 may be readily renewed or replaced whenever the occasion ariss to maintain the pipe in a sanitary condition.

In accordance with another feature of the invention there is provided means within the spiral or helical smoke passage for collecting or trapping nicotine and other im purities as the smoke passes from the bowl through the same into the smokers mouth. The said means consists of cavities or wells :0 26 in the extension within the groove 16.

These cavities or wells 26 retain the impurities out of the line of the smoke and also contribute to keep the spiral smoke passage clean and also from becoming clogged.

23 What is claimed is:

1. In a smoking pipe, stem sections, one of said sections having a spiral groove and a corresponding ridge and extending into the other section to define a spiral smoke pas- 30 sage, said ridge having a continuous groove therein, and a piece of packing material laid in the groove in the ridge and contacting with the surrounding stem section to form an air tight fit between said sections.

2. In an article for smoking a tobacco product, a mouthpiece having an extension, said extension having a spiral smoke groove therein which forms a continuation of the smoke passage in the mouthpiece, and said extension having cavities therein within the ove which serve as depositories for oreign matter.

ENOOH C. GUNNARSON. 

